I agree sound detection is a necessity to round out alfreds security features. It would be extremely useful in a fire scenario where a smoke alarm will likely sound before any motion is detected by the camera. Please add this feature. As the other users stated I am willing to buy an upgraded version to get this feature.
Thank you

My use case is monitoring a foster dog in a crate. The idea is to be able to determine the level of stress the dog is going through, which can come in the form of a lot of crying, but not necessarily moving around, which may not trigger a motion detection.

So Renee, is sound detection currently in development? Your flow chart implies it is/was 3 years ago. Any news on this feature? I would gladly help with any beta testing you may want volunteers for testing purposes.